from level 9
Origin: Intermediate Buildings
| Level | 1 | 2 | 3 |
| Appearance |  |
 |
 |
| Build Cost | 30  45  |
50 |
150 |
| Build Time | 3 minutes | 2.30 minutes | 5 minutes |
| Production | 1  = 1  |
2 = 2 |
3 = 3 |
| Level | 4 | 5 | 6 |
| Appearance |  |
 |
 |
| Build Cost | 300 |
500 |
50  |
| Build Time | 7.30 minutes | 10 minutes | 10 minutes |
| Production | 4 = 4 |
5 = 5 |
6 = 6 |
| Level | 7 | ||
| Appearance |  |
||
| Build Cost | 500  |
||
| Build Time | 7 days | ||
| Production | 7 = 7 |
||
| Production Time | 3 minutes | ||
Immediately Upgrade a Building:
| Level | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Cost | 4  |
25 |
74 |
149 |
293 |
135 |
450 |